Module: Reclassify Grid Values
Copyrights (c) 2005 by Volker Wichmann
Menu: Grid > Tools > Values
Description
The module can be used to reclassify the values of a grid. It provides three different options: (a) reclassification of single values, (b) reclassification of a range of values and (c) reclassification of value ranges specified in a lookup table. In addition to theses methods, two special cases (No-Data values and values not included in the reclassification setup) are supported. In mode (a) and (b) the 'No-Data option' is evaluated before the method settings, in mode (c) the option is evaluated only if the No-Data value ins't included in the lookup table. The 'other values' option is always evaluated after checking the method settings.
Parameters
NameTypeIdentifierDescriptionConstraints
Input
Grid Grid (input)INPUTGrid to reclassify
Lookup Table (*)Table (optional input)RETAB_2Lookup table used in method "user supplied table"
Output
Reclassified GridGrid (output)RESULTReclassifed grid.
Options
MethodChoiceMETHODSelect the desired method: 1. a single value or a range defined by a single value is reclassified, 2. a range of values is reclassified, 3. the lookup table is used to reclassify the grid.Available Choices:
[0] single
[1] range
[2] simple table
[3] user supplied table
old valueFloating pointOLDValue to reclassify.
new valueFloating pointNEWNew value.
operatorChoiceSOPERATORSelect the desired operator (<;.;=; >;.); it is possible to define a range above or below the old value.Available Choices:
[0] =
[1] <
[2] <=
[3] >=
[4] >
minimum valueFloating pointMINMinimum value of the range to be reclassified.
maximum valueFloating pointMAXMaximum value of the range to be reclassified.
new valueFloating pointRNEWnew value
operatorChoiceROPERATORSelect operator: eg. min < value < max.Available Choices:
[0] <=
[1] <
Lookup TableStatic tableRETABLookup table used in method "table"3 Fields:
- 1. [DOUBLE] minimum
- 2. [DOUBLE] maximum
- 3. [DOUBLE] new
operatorChoiceTOPERATORSelect the desired operator (min < value < max; min . value < max; min .value . max; min < value . max).Available Choices:
[0] min <= value < max
[1] min <= value <= max
[2] min < value <= max
[3] min < value < max
minimum valueTable fieldF_MIN
maximum valueTable fieldF_MAX
new valueTable fieldF_CODE
no data valuesBooleanNODATAOPTUse this option to reclassify No-Data values independently of the method settings.
no data values >> valueFloating pointNODATAnew value
other valuesBooleanOTHEROPTUse this option to reclassify all other values that are not specified in the options above.
other values >> valueFloating pointOTHERSnew value
(*) optional